CVE-2026-101914
Medium
Description
@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.1 and 1.14.1, the exact path (method name) matcher used by RBAC performs a prefix comparison instead of an equality comparison when case-insensitive matching is enabled. If one service method name prefixes another and the methods have different access rules, a request for the longer method can match the shorter method's rule and cause incorrect authorization. This issue is fixed in versions 1.13.1 and 1.14.1.
SeverityMedium
CVSS6.5
Exploit probability—
Product@grpc/grpc-js-xds
PublishedSep 28, 2026
First seenSep 28, 2026
Weakness typeCWE-187CWE-187CWE-863Incorrect authorization
How to fix
Update
- @grpc/grpc-js-xds1.13.1, 1.14.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @grpc/grpc-js-xdsnpm | v < 1.13.1, 1.14.0 ≤ v < 1.14.1 | 1.13.1, 1.14.1 |
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